Patent GB-190311903-A (GB)
Title: Improvements in or relating to Type-justifying Mechanism.
Inventor: BOULT ALFRED JULIUS
Filed: 1903-05-25
Granted: 1903-08-27
Abstract: 11,903. Boult, A. J., [Converse, F. B.]. May 25. Type, setting linotype and like machines.-Relates to apparatus for justifying lines of types or matrices. Fig. 1 shows a front elevation, and Fig. 3 a rear elevation, of one arrangement. The line of types from the composing-machine having temporary spaces E, Fig. 7, between the words, is fed into a channel B' by any suitable means. As the line passes, the recesses e in the space E, operate a detent or pawl d and this rocks an arm d<2> having a pawl d<3> engaging teeth on a rack D sliding on a guide D<2>. The rack D is thus moved to the left, from the zero position, one step for each temporary space in the line. The line is advanced until it has passed the pawl b, which is on a stationary pivot, and, at this time, the lever m<1> is actuated to permit the clutch m<2>, m<8> to engage and drive the shaft M through one revolution. A spring c<9> operates a lever c<3>, under the control of a cam c<12>, to move a horizontal slide C to the left until an incline on a spring piece c<5>, projecting from the slide D, operates a detent c<6> on the slide C, engaging the detent with a fixed rack and stopping the slide. On the slide C a measuring-wedge O is mounted to slide vertically. The wedge O is thus moved to the left the same distance as the slide D, in proportion to the number of temporary spaces in the line. The space occupied by the temporary spaces is eliminated from the measuring-operation by this movement of the wedge. The incline of the wedge is, at the same time, adjusted in accordance with the number of spaces, so that its vertical movement in measuring the line will be proportionate to the size of justifying-space required, irrespective of the number of spaces in the line. The wedge consists of a bar O slotted to receive a blade o<3> pivoted at its upper end at o<4>. As the wedge moves to the left, a projection o<11> on the blade o<3> is engaged by a fixed pin o<18>, and the edge of the blade is thus set to the proper inclination. The blade is held in this set position while the wedge moves up, by a toothed arm o<8> pivoted on the part O engaging a tooth on the blade o<3>. The arm o<8> is, normally, held up out of engagement with the tooth on the blade o<3> by a fixed pin o<19>. The wedge is moved up to measure the line between its inclined edge and the pawl b, by a slide S having a slot s<3> engaging a pin o<13> on the wedge. The slide S is pulled upwardly by a weighted cord s<12> and is geared by a rack s<4>, segment s<5>, and pinion s<7> to a sliding rack s<8> engaging a cam s<11> on the shaft M. The wedge, in accordance with the amount of its vertical movement, is arranged to adjust any suitable form of space-selecting, or space cutting, casting, or forming, mechanism. In the apparatus shown, a space-casting mechanism is used, Fig. 3. The metal is pumped through a gate R into a mould Q having a movable blade q for regulating the size of space cast. A roller on the blade q engages an inclined slot q<2> in a sliding bar q<1> moved up by the pin o<13> on the wedge O. The bar q<1> is guided by an adjustable bar q<4> having a spring pin q<7> engaging a wing q<8> on the bar q<1> to hold it in any position to which it is moved by the wedge. The space-inserting mechanism may be of any suitable kind, the one described being partly similar to that described in Specification No. 1587, A.D. 1899. After the mould has been adjusted, a cam lug g<3> on the line shaft M, operates suitable mechanism to draw a cord attached to a follower G and advance the line. The types engage and press down on an arm V, which presses on a spring to raise an arm V<1>. The arm V<1> has a nose, which engages in the recess e in each temporary space, and the arms are moved to operate a lever v<1> and rod v<2> to release a clutch z<1>, z<3> on the word shaft Y. A cam on the word shafts operates the pump of the metal pot, and another cam r<4> then operates, through a rod r<3> and levers r<1>, r<2>, to move the gate block R to the left, Fig. 3, from over the rear end of the mould cavity. An ejecting-slide u on the block R is brought into line with the mould and is then moved forward to eject the space from the mould into the line, the incoming space ejecting the temporary one. These operations are repeated for each space in the line, and the follower G finally moves the line forward to the galley &c.